I commend the spirit and attitude of your post as well, especially having also gotten a rejection. I am curious though, what exactly did you learn from this experience? I'd love to be able to claim the same, but given absolutely zero feedback from the process, I'm at a loss to do so.
Specifically I felt that going through the YC application forced me to think through questions that any other investor/incubator/accelerator (and even some customers) would also have.
Additionally, since the answers I had to those questions didn't pass muster with the partners I can either shrug it off (YC is extremely competitive and even they admit they make mistakes all the time) and take the rejection as additional motivation or I can take their decision as truth and take a closer look at my current business model to see what can/should be tweaked. Either way it can be helpful :)
Of course it would be nice if the rejection emails were more personalized, but I just don't think that's possible with the number of applications they receive.
I do commend yours and the above's attitude!